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			a{
				background-color: dodgerblue;
				color: white;
				text-decoration: none;
				border: 5px solid dodgerblue;
				/*border-radius边框圆角属性*/
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				font-weight: bold;
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			}
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		<a href="#">点击腹肌增加8块，同桌少十厘米</a>
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